We collected a lot of books to get the necessary information but only half _________helpful, so we failed to finish the work.
| A．is | B．are | C．was | D．were |
The Internet gives students the chance to have the materials they need _________ to them quickly and cheaply.
| A．to deliver | B．delivered | C．delivering | D．deliver |
An indoor man refers to a person who spends __________ time on indoor activities, such as playing computer games, sleeping and watching sports on television.
| A．appropriate | B．specific | C．limited | D．considerable |
---- __________ you say goodbye so soon?
---- I’m sorry. My mother is expecting me at home.
| A．Must | B．Can | C．Would | D．Might |
It is known to us that it was such great efforts _____________ all the Chinese athletes had made _________ helped them get 51 gold medals in the 2008 Beijing Olympic Games.
| A．as, that | B．that, which | C．that, as | D．which, which |
When they retire, many people over 60 prefer the houses in the country to spend their remaining years to __________ in a large city.
| A．it | B．that | C．those | D．which |